mirror of https://gitee.com/openkylin/linux.git
06aa82e498
8250 uart driver currently supports only software assisted hw flow control. The software assisted hw flow control maintains a hw_stopped flag in the tty structure to stop and start transmission and use modem status interrupt for the event to drive the handshake signals. This is not needed if hw has flow control capabilities. This patch adds a DT attribute for enabling hw flow control for a uart port. Also skip stop and start if this flag is present in flag field of the port structure. Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> CC: Rob Herring <robh+dt@kernel.org> CC: Pawel Moll <pawel.moll@arm.com> CC: Mark Rutland <mark.rutland@arm.com> CC: Ian Campbell <ijc+devicetree@hellion.org.uk> CC: Kumar Gala <galak@codeaurora.org> CC: Randy Dunlap <rdunlap@infradead.org> CC: Jiri Slaby <jslaby@suse.cz> CC: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| .. | ||
| altera_jtaguart.txt | ||
| altera_uart.txt | ||
| arc-uart.txt | ||
| atmel-usart.txt | ||
| cavium-uart.txt | ||
| cirrus,clps711x-uart.txt | ||
| efm32-uart.txt | ||
| fsl-imx-uart.txt | ||
| fsl-lpuart.txt | ||
| fsl-mxs-auart.txt | ||
| lantiq_asc.txt | ||
| maxim,max310x.txt | ||
| mrvl,pxa-ssp.txt | ||
| mrvl-serial.txt | ||
| nvidia,tegra20-hsuart.txt | ||
| nxp,sc16is7xx.txt | ||
| nxp-lpc32xx-hsuart.txt | ||
| of-serial.txt | ||
| omap_serial.txt | ||
| pl011.txt | ||
| qca,ar9330-uart.txt | ||
| qcom,msm-uart.txt | ||
| qcom,msm-uartdm.txt | ||
| renesas,sci-serial.txt | ||
| rs485.txt | ||
| samsung_uart.txt | ||
| sirf-uart.txt | ||
| snps-dw-apb-uart.txt | ||
| st-asc.txt | ||
| via,vt8500-uart.txt | ||
| vt8500-uart.txt | ||